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We know that Java is used to develop cross-platform applications and we can use Java in almost all types of electronic devices. The standard Java-based applications are used on individual systems; we need to install the standard application on each system from where we want to use the application. Web applications are different; they will […]
HashMap is part of Java Collections, which has been first implemented in Java 1.2 version and has been in use since then. Java Collection Framework was introduced as a technique to store and operate on data with ease. This collection framework provides many interfaces and its implementations to operate on data with speed and efficiency […]
The following article explains how to maintain reference count of objects whenever instance of a class is created. Some times it will be useful to get to know the number of instances are created for a class; this article will be useful. Step (1). Create your own class and make sure add the following private […]
Java Annotations (or metadata) are introduced in Java (Java SE5 and above) to give additional information to the Java compiler about your Java program. But these are not actually part of the Java code. Annotations are only for representing metadata information. Then what is the use of using Annotations? Java Annotations are used to generate […]
In Java, to create an object for a class we use new keyword. The new keyword creates an object of a class and initializes the object by calling it’s constructor. It is a strait forward thing to create an object for a class. But, if we have another class within the class, then how we […]
JAVA is pretty famous software platform used to develop variety of applications; web-based, stand alone, mobile, etc.,. JAVA is used in wide variety of platforms from embedded devices to enterprise servers. Here are the steps to write your first JAVA program. Step (1). You need to download JDK and install it on your system. For […]
CLASSPATH is the environment variable where Java compilers look for class files. Both javac & java programs will look into CLASSPATH environment variable to search for class files. For example, if your class files are located under c:\workspace folder, you need to add this folder path to CLASSPATH environment variable in-order to avoid using -cp […]
